TN State Board Samacheer Kalvi Online Test for 12th Std - Biology - English - Classical Genetics

Question 1 Of 10

“Gametes are never hybrid” This is a statement of

Law of dominance Law of independent assortment law of segregation Law of random fertilization

Question 2 Of 10

Extra nuclear inheritance is a consequence of presence of genes in

Mitrochondria and chloroplasts Endoplasmic reticulum and mitrochondria Ribosomes and chloroplast Lysososmes and ribosomes

Question 3 Of 10

In order to find out the different types of gametes produced by a pea plant having the genotype AaBb, it should be crossed to a plant with the genotype

aaBB AaBB AABB aabb

Question 4 Of 10

Select the correct statement from the ones given below with respect to dihybrid cross

Tightly linked genes on the same chromosomes show very few combinations Tightly linked genes on the same chromosomes show higher combinations Genes far apart on the same chromosomes show very few recombinations Genes loosely linked on the same chromosomes show similar recombinations as the tightly linked ones

Question 5 Of 10

In his classic experiments on Pea plants, Mendel did not use

Flowering position seed colour pod length Seed shape

Question 6 Of 10

The dominant epistatis ratio is

9:3:3:1 12:3:1 9:3:4 9:6:1

Question 7 Of 10

Test cross involves

Crossing between two genotypes with a recessive trait Crossing between two F1 hybrids Crossing the F1 hybrid with a double recessive genotype Crossing between two genotypes with dominant trait

Question 8 Of 10

In pea plants, yellow seeds are dominant to green. If a heterozygous yellow seed plant is crossed with a green seeded plant, what ratio of yellow and green seeded plants would you expect in FI generation?

9:1 1:3 3:1 50:50

Question 9 Of 10

Which Mendelian idea is depicted by a cross in which the Fx generation resembles both the parents

Incomplete dominance Law of dominance Inheritance of one gene Codominance

Question 10 Of 10

How many different kinds of gametes will be produced by a plant having the genotype AABbCC?

Three Four Nine Two

Tamil Nadu State Board ( Samacheer Kalvi ) Online Test based on Book Back Questions - 12th Standard Biology - English Medium - Classical Genetics

Samacheer Kalvi 12th Biology - Classical Genetics - Book Back Questions in English Medium